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journal1 ›› 2017, Vol. 33 ›› Issue (2/3): 427-432.DOI: 10.16409/j.cnki.2095-039x.2017.03.019

• SCIENTIFIC NOTES • Previous Articles    

Identification of Antagonistic Fungus against Sphaerotheca fuliginea and Evaluation of Its Biocontrol Efficacy

LU Xingrong, CHEN Dawei, ZHANG Shuwu, LIU Jia, XU Bingliang   

  1. College of Plant Protection, Gansu Agricultural University/Bio-control Engineering Laboratory of Crop Diseases and Pests of Gansu Province, Lanzhou 730070, China
  • Received:2016-11-30 Online:2017-06-08 Published:2017-04-08

Abstract: The antagonistic fungus against the pathogen Sphaerotheca fuliginea were isolated and assessed in this paper. The resulted showed that 21 strains of antagonistic fungus were isolated from the edge of cucumber tissue infected by S. fuliginea. Among all the isolated strains, the strain JK-13 presented the highest control efficacy in vitro and greenhouse experiments. The inhibitory rate on S. fuliginea spores germination was 83.93% after treated by strain JK-13 fermentation broth for 48 h. The control efficacy of strain JK-13 fermentation broth on S. fuliginea were 88.02% and 76.34% after treated for 7 d by leaf disc and pot experiments, respectively. Based on the morphological characteristic and molecular identification, the strain JK-13 was identified as Fusarium solani.

Key words: cucumber powdery mildew, antagonistic fungus, identification, biological control

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